anderson



(No Model.) B. C. ANDERSON.

STOP 000K. BOX.

Patented Nov l UNIT-EDr STATES BENJAMIN o. ANDERSON, on BEooKLYN, NEW YORK, AssieNoR M-ELLENEY H. ANDEEsoN, or SAME PEACE.

1 PATENT OFFICE..

STOP-COCK Box.

SPECIFICATION forming part of Letters Patent No. 529,638, dated November 20, 1894.

` Application filed May 31,1894. Serial No. 512,977. (No model.)

fitted in the streets near the curbstone to facilitate the turning off and on of the water from a street main to supply or cut olf a building. Devices for this purpose have been long known and are much approved, which involve the principle of the telescopic tube. Thetop piece which lies linsh with or slightly sunk below the upper surface of the pavement can rise and sink freely, and is equipped with provision for securing it against access by any but the proper parties, and for attaining this important end with efficiency and economy. A pipe of small diameter, only suicient to loosely inclose the operating rod, is rigidly fixed to this box and extends downward therefrom, and carries a nut or enlargement at its lower end. A pipe of similar size is fixed to the stop cock below, and reaches upward therefrom, carrying on its upper end a suitable coupling which connects it to a pipe of sufficiently larger diameter to inc'lose the enlarged foot of the upper pipe. The upper end of the large pipe is contracted so as to match loosely around the upper pipe.

The accompanying drawings form a part of this specification and represent what I consider the best means of carrying out the invention.

Figure lA is a central vertical section, a portion being broken away to contract the length. Fig. 2 is a plan view, showing the box in the locked condition. Fig. 3 is a plan view of the box with the cover removed. Fig. 4. is a vertical section of a portion showing a modification.

Similar letters of reference indicate corresponding parts in all the figures where they appear.

C is a shaft of proper length, which is in effect a prolongation of the plug of the cock or of the stem of the valve, in case a screwvalve is used. The upper end of the shaft C lies sufficiently below the surface of the pavement, and is squared so as to receive and allow the shaft to be turned by a wrench applied from above, in the obvious manner.

D is a tube loosely inclosing the lower and main portion of the shaft O. A coupling D connects this tube with a larger tube D2, the upper end of which latter is formed with a stout internal lip D3.

M- is a tube of smaller diameter, loosely inclosing the upper portion of the shaft C. Its lower end receives a nut M', which is permanently secured, and is of larger diameter than the yinterior of the internal lip D3. It will be understood that the tube M, M', is introduced in the larger tube, D2, from belowbefore the latter is engaged with the coupling D. The upper end of the tubeM is tapped into the base of a boX P, of cast iron or other suitable material, sunk in the pavement Q of the sidewalk, so that its upper edge is iush with or vpreferably a little below the level of the pavement. The box P is formed with holes p in its base which allow any water to be discharged into and absorbed by the adjacent earth.

The top -of the box P is provided with a flange P', the main portion of which is plane. This lis properly sunk-into and gives an efficient bearing on the nag-stones, or other material of the pavement. 0n one side just below the flange, is an aperture p. On the opposite side of the box is a notch p2 accommodated by a depression of the flange snciently lower at that point, which depression has a properly shaped hole to receive a screw P3, having a stout head standing with its point upward, confined by a thin binding nut received into the depression and extending upward through a sufficient hole in the arm R2 of the cover R, its upper end receiving a nut T which constitutes the iinalv locking means for the cover.

R is a cover of proper size and form, equipped with a sufficiently stout projection R adapted to engage in the aperture p', and having on its opposite edge a projection R2 of proper form to match in the rectangular notch p2, and also to receive the bolt P3 and unt T, and allow the latter to be turned. The nut nearly fills a cavity in the upper face of the arm R2, and can only be opened by the agent of the water or gas department, who is the only party authorized to open the box. When he has removed the nutT that side of the cover can be lifted and the projection R can then be easilydisengaged from the aperture 1J' and leave the box open to allow access for operating the shaft C. When this shaft has been properly turned to eect the required change in the condition of the cock, the operator restores the parts to their places and the water or gas will be supplied or cnt oft, as the case may be, until the box is again opened by the proper party, and some other change is made.

My invention not only allows the box P and its attachments, including the pipe M and nut M to be alike for all depths of main, but also allows the large pipe D2 and the coupling D to be also alike for all depths, and only requires the small pipe D and the shaft C to be varied in length to adapt the device for all conditions ever occurring in practice. It also provides conveniently for assembling and separation of the parts.

The bolt P3 and its binding nut, may be made by machinery with accuracy and perfection, and the properly shaped hole in the to serve as a hinge, and the arm R2 on the opposite edge recessed and perforated as shown, in combination with the box P having the flange P', with provisions as the aperture p for receiving the arm R and thus engaging one side of the cover with liberty for the cover to turn thereon as a hinge, the lug or depression having a suitable aperture to receive a bolt and binding nut, and the bolt P3 with its head l?4 and binding nut adapted for holding such bolt strongly, rigidly and permanently in the depression Without necessity for tapping the box, and with the removable nut T for confining and releasing the arm R2 of the cover, all arranged for joint operation substantially as herein specified.

In testimony that I claim the invention above set forth I affix my signature in presence of two witnesses.

BENJAMIN C. ANDERSON.

Witnesses:

H. A. STETsoN, M. F. BOYLE. 

